An out-of-bounds write issue was addressed with improved bounds checking. (CVE-2026-84523)
CVE-2026-84523 is an out-of-bounds write vulnerability that was fixed by improved bounds checking. The flaw could allow an application to cause unexpected system termination or write to kernel memory. The issue is addressed in multiple Apple operating systems including iOS 26.7 and later, iPadOS 26.7 and later, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, and watchOS 27.
AI Analysis
Technical Summary
This vulnerability involves an out-of-bounds write condition in Apple operating systems that could be exploited by an application to cause unexpected system termination or to write to kernel memory. The issue was mitigated by implementing improved bounds checking. The fix is included in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, and watchOS 27.
Potential Impact
An application exploiting this vulnerability could cause the system to terminate unexpectedly or could write to kernel memory, potentially leading to system instability or compromise of kernel-level security. No evidence of active exploitation in the wild is reported.
Mitigation Recommendations
This vulnerability has been fixed by Apple in the specified OS versions. Users and administrators should update to iOS 26.7 or later, iPadOS 26.7 or later, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, or watchOS 27 to remediate this issue.
An out-of-bounds write issue was addressed with improved bounds checking. (CVE-2026-84523)
Description
CVE-2026-84523 is an out-of-bounds write vulnerability that was fixed by improved bounds checking. The flaw could allow an application to cause unexpected system termination or write to kernel memory. The issue is addressed in multiple Apple operating systems including iOS 26.7 and later, iPadOS 26.7 and later, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, and watchOS 27.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an out-of-bounds write condition in Apple operating systems that could be exploited by an application to cause unexpected system termination or to write to kernel memory. The issue was mitigated by implementing improved bounds checking. The fix is included in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, and watchOS 27.
Potential Impact
An application exploiting this vulnerability could cause the system to terminate unexpectedly or could write to kernel memory, potentially leading to system instability or compromise of kernel-level security. No evidence of active exploitation in the wild is reported.
Mitigation Recommendations
This vulnerability has been fixed by Apple in the specified OS versions. Users and administrators should update to iOS 26.7 or later, iPadOS 26.7 or later, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, or watchOS 27 to remediate this issue.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-p44q-xh35-p8h9
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-84523"]
- State
- PUBLISHED
Threat ID: 6aa8a1a255bf5e2cf5f3d4d6
Added to database: 09/15/2026, 01:38:42 UTC
Last enriched: 09/15/2026, 01:50:16 UTC
Last updated: 09/15/2026, 03:01:23 UTC
Views: 2
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